Dan, you nailed it! They are indeed spacers. They are going to become a part of my leg vise for my workbench. I didn't want to use the traditional parallel guide with a pin, so I made these spacers. They will sit at the bottom of the vise, and need to match the thickness of the workpiece. I think 99% of the time I will just use the 3/4" block, but the 4,2,1, and 1/2" blocks can be combined to hit any spacing up to 7 1/2" total.

Jeff, I'm sure you've seen the wonders that Kari has on her blog. It shames me to say, but I picked the most boring font I could find to make the carving easier.

I didn't use anything fancy, just the standard set of blue Marples chisels. It would have been good to have a curved carving gouge for some of the curves, like the 8's and 3's. But even regular chisels will get the job done.